Some love em and some hate them. I am in the middle and like one a year.
Booked a Baltic cruise for July - prefer a week, but two needed for the Baltics from the UK.
Never book all inclusive hotels but that's part of the package on board.
Hate the wasteful gluttony of some passengers ie piling up a plate full of buns then leaving half of them and also hate the 24/7 pollution from the dirty engines.
A few ports require ships to plug into the mains and turn off engines while in port - costs millions to set up, but has to be the way forward.
You know it makes sense! 
